Yes, I've tried everything already and I can probably say that I read every forum about CTD and Freezes three times.
I am not inexperienced so I know quite well what I am doing. That is why I came to the conclusion before. I've tested many scenarios and done things that others used to fix similar issues. I also tried optimizing my Laptop and reducing my Settings to the point of it being totally zeroed out.

Well, I tried everything I have described and come to the conclusion that it isn't fixed completely. It doesn't happen when in "Full Screen" mode. So my FSX-SE doesn't freeze unless in windowed-mode and it does let me fly. I dislike "Full Screen" mode so I will see if anything else can be done but as a side project. Thanks anyways.

Well, I tried everything I have described and come to the conclusion that it isn't fixed completely. It doesn't happen when in "Full Screen" mode. So my FSX-SE doesn't freeze unless in windowed-mode and it does let me fly. I dislike "Full Screen" mode so I will see if anything else can be done but as a side project. Thanks anyways.

Below I copy and pasted what I have responded with on this thread: http://www.avsim.com/topic/474350-ngx-causing-freezes/
Anyone with similar issues as I do, check out the link and follow the topic for a chance of a solution. Thanks.
"Hello all, after frustration and lots of testing, I have come to the conclusion that I am 99% sure it is FSUIPC causing the issue.
Yes, my FSX.cfg is tweaked but I tried building a new one already and nothing worked.
I have tried updating my drivers for my ATI, Intel HD 4000 and Realtek Sound Package. At first, that seemed to work but temporarily.
Then I checked to see if it truly is the NGX ONLY causing the issue. It turned out to be the case.
I've read many things about the config file and its tweaks but that wasn't my problem.
I went into Event Viewer to see if anything was logged and nothing was.
I tried reinstalling the NGX and after it still didn't work, I tried to repair it. That seemed to work at first but again temporarily.
Then I went into Steam to check my FSX build and it did fix around 540 files that were "corupted". I suggest doing this but for me it wasn't the winner.
I read many,many posts of other problems until I came across one thing. It was to take the DLL.xml file and EXE.xml file and place them out of the folder. I found that FSX wouldn't freeze anymore which means something wasn't working nicely with the NGX. I started by placing only the EXE.xml file back and nothing froze still. Then I placed the DLL.xml file back and FSX froze again. After, I started, one by one, to get rid of some entry's and I've found that FSUIPC, once gone, let the NGX run freeze free. The issue is, How do I fix it? Well, sorry to disappoint,but at this time I do not know and I am still researching some things about FSUIPC but I did try one thing and that was to reinstall it. It didn't work for me but I still recommend people to try it. As I test, I encourage people with similar issues to try all the things I did to see what your problem is.Thanks and hope to find the cure soon.
Ben"

Hello all, after frustration and lots of testing, I have come to the conclusion that I am 99% sure it is FSUIPC causing the issue.
Yes, my FSX.cfg is tweaked but I tried building a new one already and nothing worked.
I have tried updating my drivers for my ATI, Intel HD 4000 and Realtek Sound Package. At first, that seemed to work but temporarily.
Then I checked to see if it truly is the NGX ONLY causing the issue. It turned out to be the case.
I've read many things about the config file and its tweaks but that wasn't my problem.
I went into Event Viewer to see if anything was logged and nothing was.
I tried reinstalling the NGX and after it still didn't work, I tried to repair it. That seemed to work at first but again temporarily.
Then I went into Steam to check my FSX build and it did fix around 540 files that were "corupted". I suggest doing this but for me it wasn't the winner.
I read many,many posts of other problems until I came across one thing. It was to take the DLL.xml file and EXE.xml file and place them out of the folder. I found that FSX wouldn't freeze anymore which means something wasn't working nicely with the NGX. I started by placing only the EXE.xml file back and nothing froze still. Then I placed the DLL.xml file back and FSX froze again. After, I started, one by one, to get rid of some entry's and I've found that FSUIPC, once gone, let the NGX run freeze free. The issue is, How do I fix it? Well, sorry to disappoint,but at this time I do not know and I am still researching some things about FSUIPC but I did try one thing and that was to reinstall it. It didn't work for me but I still recommend people to try it. As I test, I encourage people with similar issues to try all the things I did to see what your problem is.Thanks and hope to find the cure soon.
Ben

Yes and all the things you suggest doing, I've already done and more. I've been through many topics already and none of them I have found helped really. Again, I never messed with anything since it started happening except updating the NGX and it is the only plane now not working.

Hello,
Lately, all of a sudden, FSX-SE started freezing for me. I already explained everything in this topic: http://www.avsim.com/topic/474350-ngx-causing-freezes/ so I won't go over it again. When FSX freezes, it will freeze only with the PMDG 737 and for way too long. Minutes perhaps hours which is unacceptable especially since it just started happening. I have tried everything people have fixed freezing with and nothing worked. Please help.
Thanks

Alright, well everything I thought may be the cause, isn't. Such as changing the Graphics settings to minimum quality and maximum performance and , rolling back a version,. Changing the settings that effect the GPU to either off or lower setting and a few other minor things that didn't work. It starts freezing even if I just click on the top bar. I hope you know what I mean with that. When FSX is in windowed mode, the bar on the top. Just by clicking it, FSX freezes. The I've done the same to the Aerosoft Airbus X and PMDG 777 and no freezing whatsoever. I hate to admit, the NGX is the cause I can't explain how.

The thing is that I never had to update the graphics driver when the error started to occur which means that it just started happening. Right now I'm looking at the Graphics Control Panel to check a few things and test some more hopefully finding a cure. I'll share whatever I try and if it works.

I have Affinity Mask set to 14 and overclocking isn't possible on laptops. At least that's what I heard and so that shows I didn't overclock it. Like I said, it recently started to happen and maybe its due to the NGX update. Again, I went through the event viewer and nothing was logged about FSX so I have a feeling its the driver. Today I tested again and the screen, when in windowed mode, is able to minimize. When the screen is maximized on the computer and you then double click on the top bar, the window becomes smaller and that is when the Graphics driver kicks in to load the re sized textures, I tried doing that today, and I got a freeze again. But only on the NGX so I have a feeling it is a graphics issue but why now? That is the question I want to know. So what I did is try to uninstall and re-install all Simconnects. It still didn't work so I don't know what to say. All my drivers are up to date and set to run FSX-SE in maximum performance.